I have the same issue. However, for me it works find in the app, but fails intermittently when running my tests.
// Allow Swift UI to observe changes to the container and update the UI in
// response to changes.
@Observable
// To allow updates to the container to update the UI, the updates need to
// happen on the main actor.
@MainActor
class DataContainer {
let modelContainer: ModelContainer
let myService: MyService
var context: ModelContext {
modelContainer.mainContext
}
init(inMemoryOnly: Bool = false, includeSampleData: Bool = false) {
let schema = Schema([
MyModel.self,
])
let modelConfiguration = ModelConfiguration(
schema: schema,
isStoredInMemoryOnly: inMemoryOnly || includeSampleData,
)
let context: ModelContext
do {
// Create the container.
self.modelContainer = try ModelContainer(
for: schema,
configurations: [modelConfiguration],
)
context = self.modelContainer.mainContext
} catch {
fatalError("Unable to create model container: \(error)")
}
self.myService = MyService(context: context)
if includeSampleData {
do {
try self.loadSampleData()
} catch {
fatalError("Unable to create load sample data: \(error)")
}
}
}
}
@MainActor
@Suite("Test My Thing")
struct MyThingTests {
let dataContainer: DataContainer
init() {
self.dataContainer = DataContainer(inMemoryOnly: true)
}
func createItem(name: String) {
let item = Item(name: name)
self.dataContainer.context.insert(item) // <-- THIS LINE FAILS INTERMITTENLY
}
@Testfunc testThing() {
self.createMeal(name: "Something")
let result = self.service.doThing(item)
#expect(result == true)
}
}
